#wrapper {
    height: 100%;
    box-sizing: border-box;
    padding-top: 40px;
}
#menu {
    height: 40px;
    z-index: 10;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    border-bottom: 1px solid #ccc;
}
#container-main {
    border-left: 1px dashed #ccc;
}
#loading {
    z-index: 2000;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    text-align: center;
    background-color: rgba(0, 0, 0, 0.2);
}
#loading .spinner-border {
    margin: 0 auto;
}
